Novel efficient hybrid-DEM collision integration scheme

Kay A. Buist, L.H.J. Seelen, Niels G. Deen, Johan Padding, J.A.M. Kuipers

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

A hybrid collision integration scheme is introduced, benefiting from the efficient handling of binary collisions in the hard sphere scheme and the robust time scaling of the soft sphere scheme. In typical dynamic dense granular flow, simulated with the soft sphere scheme, the amount of collisions involving more than two particles are limited, and necessarily so because of loss of energy decay otherwise. Because most collisions are binary, these collisions can be handled within one time step without the necessary numerical integration as needed in a soft sphere method. The remainder of the collisions can still be handled with the classical soft sphere scheme. In this work the hybrid collisions integration scheme is shortly described and tested with a bounding box problem. The hybrid scheme is capable of solving the same problem as a classic soft sphere scheme but is roughly one order of magnitude faster.
Original languageEnglish
Title of host publicationProceedings of the 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
Subtitle of host publicationProgress in Applied CFD - CFD2017
EditorsJan Erik Olsen, Stein Tore Johansen
Place of PublicationOslo, Norway
PublisherSINTEF
Pages779-784
ISBN (Electronic)978-82-536-1544-8
Publication statusPublished - 2017
EventCFD 2017: 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries - Trondheim, Norway
Duration: 30 May 20171 Jun 2017

Publication series

NameSINTEF Proceedings
Volume2
ISSN (Electronic)2387-4295

Conference

ConferenceCFD 2017: 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
CountryNorway
CityTrondheim
Period30/05/171/06/17

Keywords

  • Discrete Element Method
  • Collision integration scheme
  • optimization

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